随笔分类 - Java 练习题总结
摘要：Sometimes after mapping and filtering a stream, you need to use it more than one time. For example, find the maximum and count all the elements of a r
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摘要：Implement a method for finding min and max elements of a stream in accordance with a given comparator. The found elements pass to minMaxConsumer in th
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摘要：Given a class named Range. It represents a range from A (inclusive) to B (exclusive). The class implements the interface Iterable, therefore, an insta
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摘要：You're dealing with a string consisting of brackets. Write a program to examine whether the pairs of "{", "}", "(", ")", "[", "]" are correct or balan
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摘要：Some info: HTML is a markup language, that is based on tags. There are many types of tags, for example, html, div, h1, h2. Each type of tag has start
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摘要：Write a program simulating a stack that can effectively return the current max element. Your program should read a sequence of commands of different t
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摘要：The simplest spell checker is the one based on a list of known words. Every word in the text is being searched for in this list and, if such word was
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摘要：You have a table of integer numbers. You should rotate rows of the table by the specified distance. Try to use collections and standard methods for th
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摘要：Write a program that reads the list of integer numbers separated by spaces from the standard input and then remove all numbers with even indexes (0, 2
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摘要：Has it ever bothered you when unknown people call you and try to impose their services? That can be annoying. Let's try to solve the problem by using
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摘要：The normal way to create an instance of a class is to use a public constructor of the class. But there is another technique. A class can provide a pub
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摘要：You are given a Callable object. Some say that it returns another Callable object. And that Callable returns another Callable object! And so on. You s
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摘要：Implement a method that takes three objects (instances of Thread or its subclasses). The method must start passed objects as threads in a way that the
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摘要：Implement checkPublicParameterlessConstructor that returns true if the provided class declares public parameterless constructor and false otherwise. /
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摘要：Implement the getPublicFields method that returns String array with names of public fields declared in the class object belongs to. Fields inherited f
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摘要：Here's a class named Employee with three fields: name, salary, address. Add three constructors to the class: the first one is the no-argument construc
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摘要：You are given the enum Operation and the class Account. Their implementations are shown below. The Operation enum: enum Operation { /** * deposit (add
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摘要：Read an input text from the console and print the number of words. By word we mean a sequence of characters separated by one or several spaces. If the
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摘要：Imagine that we have a typing machine that accepts only one letter at a time for writing, but we want to write an array of words instead. public class
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摘要：Write a program searching for passwords in a given text. It is known that: a password consists of digits and Latin upper- and lowercase letters; a pas
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